Subba Rao started work in 1995 at an annual salary of Rs.5000 and received an increment of Rs. 200 cash year. In which year did this income reach Rs. 7000 ?

The income of a person is Rs. 3,00,000, in the first year and he receives an increase of Rs.10,000 to his income per year for the next 19 years. Find the total amount, he received in 20 years.

Susan invested certain amount of money in two schemes A and B which offer interest at the rate of 8% per annum and 9% per annum, respectively. She received Rs. 1860 as annual interest. However had she interchanged the amount of investments in the two schemes, she would have received Rs. 20 more as annual interest. How much money did she invest in each scheme?

Find the amount to be paid at the end of 3 years in each case: Principal=Rs1,200 at 12%p.a.

The triangular side walls of a flyover have been used for advertisements. The sides of the walls are 122 m, 22 m and 120 m. The advertisements yield an earning of Rs 5000 per m^2 per year . A company hired one of its walls for 3 months. How much rent did it pay ?

An amount Rs 500/- is deposited in a bank. If the bank pays an interest at the of 10% compound annually, how much will be the amouth in 10years?

A man deposited Rs 10000 in a bank at the rate of 5% simple interest annually. Find the amount in 15^(th) year since he deposited the amount and also calculate the total amount after 20 years.

A man deposited Rs 10000 in a bank at the rate of 5% simple interest annually. Find the amount in 15^(th) year since he deposited the amount and also calculate the total amount after 20 years.

A manufacturer reckons that the value of a machine, which costs him Rs. 15625,will depreciate each year by 20%. Find the estimated value at the end of 5 years.

A manufacturer produces three products x, y, z which he sells in two markets. Annual sales are indicated below: {:("Market",,"Products",),(I,"10,000","2,000","18,000"),(II,"6,000","20,000","8,000"):} (a) If unit sale prices of x, y and z are Rs. 2.50, Rs. 1.50 and Rs. 1.00, respectively, find the total revenue in each market with the help of matrix algebra. (b) If the unit costs of the above three commodities are Rs. 2.00, Rs. 1.00 and 50 paise respectively. Find the gross profit.